Loom control



Feb. 5, 1935. L A, EDERER 1,989,975

LOOM CONTROL Filed Jan. 21, 1951 6 Sheets-Shet 2 @n CL;

L. A. EDERER Feb. 5, 19935.

LOOM CONTROL Filed Jan. 21, 1951 6 Sheets-Sheet 3 Feb. 5, 1935.' v L A, EDERER 1,989,975

LOOM CONTROL Filed Jan. 21, 1951 6 Sheets-Sheet 4 Feb. s, 1935. l L. A. EDERER 1,989,975

LOOM CONTROL Filed Jan. 2l, 1931 6 Sheets-Sheet 5 @QM @ik Feb. 5, 1935. L, A, EDERER 1,989,975

LOOM CONTROL FiledvJan. 21, 1931 e sheets-sheet 6 J3 4A* J2@ .7'0

MAGNETIC CLUTCH J7 vl fa wys.

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Patented Feb. 5, 1935 UNITEDv N STATES PATENT orricr.

Y LooM CONT-1to1.:

Lothar A.`Ede'rer, Chicago, Ill., assigner-to R. J. Edel-cr Company, Chicago, Ill., a corporation of Illinois Application anuary v721',

1931;, serial No. `519,193

rk17 Claimsy (Cl. 116-19) This invention relates to a loom control. It

has vfor one object to providein connection with a, machine 'for knittingor weaving or otherwise forming any sort ofiabric from` strandsof ma terial, means for stoppingy the machine auto-i matically upon the breaking of terial. Another Objectis to provide in connection with such an automatic stop, means for stopping the machine in a predetermined.' position, irrespective of the time of occurrence ofV the break. Another object is to provide in con nection with such `a machine and such an automatic stop, positive means for stopping the ma# chine after the occurrence of a break in the most advantageous position of the parts for repair.

My invention is `shown machine. for making nets. struction is not illustrated in Yfull detailA asI its details form no particular part of the present invention. The invention might equally wellbei machine and, in fact, to any machine using strands of ma` applied to a loom, to a spinning terial ,to'form a fabric of any Sort;

'Otherobjects willappear from time tor time'in the specification and claimsA My invention is `illustrated more or less dal grammatica-uy in the accompanying drawing-s,l

whereinp Figure 1 is an end elevation of a net making machine;

Figure 2' is a fragmentary front elevation, with parts broken away and parts omitted;

Figure 3 ,is a fragmentary side elevation, showing one .of the controllinggcams which is driven l in phase with` the power shaft;

Figure 4 isa fragmentary plan- View of one end` of the machine;

Figure y5 is a transverse Vertical fragmentary vcross section taken at line -5-1-5 of Figure 2 on an f enlarged scale, with parts broken away;

Figure 6 is a fragmentary frontl elevation ofi inv Figure 5, withy the structural details rshown parte omitted;

l* Figure 7 is a longitudinal vertical fragmentary' cross` section, taken at line '7- 7- of Figure 1, on.k

an enlarged scale and with parts broken away; Figure 8 is a transversevertical cross section taken at line 88 of Figure 7;`

Figure 9 is a side elevation of a ythread contacting lever a strand of main connection with aY The net making con-- chine'.- The details of: the machine form no 5 particular part. of the present invention.

Endv frame members Ag, of any suitable, design, are provided and they support the mechanism. They are attached by longitudinal frame parts, designated generally by the yletter A1. Some of these parts serve the added function of supporting directly parts' .of the mechanism.. A? `is a trough `preferably at vthe. front of the? machine' within whichV the operator may keep repair parts, spools and other necessary.' things. vThe frame in generalis provided with aisuicient number of longitudinal vertical `and-".'cross frame members to support and position all of the parts which are necessary to the operation .ofthe machine itself andato the stopping and-controlling mechanism.

I shall now describe rsovrnuclro'f the ,net form;

ing mechanism as is necessary to make plain thev nature and `operation of the automatic stopping mechanism. The-machine in the form illustrated herewith makes nets from .two sets ofthreads,v one set of threads is supplied by spoolsand ank other set of threads is supplied by shuttles. Spools B are carried on rods B1 which are them-v selves carriedV on frame members B2, suitably supported upon any sort ojf bracket or other structural member. The spools, are preferably arranged in rows, as indicatedin Figures 1 and 2. Suitably supported in brackets and extending-longitudinally along the machine and above the spools is a spacer bar `B3 having :perforations B4., one yfor each thread orcord B5, as shown' generally in Figure l and in detail in Figure 5. Abovefand gener-ally parallel with the member B3 is a pairof rods B6. Generallyparallel with each other and'withthe men-mers` B4 and B6 and above them,.i-s a pair of spacing bars B7, B8, perforated ns1-at B9, B10, respectively. Y It will=be f noticed, as indicatedparticularly in lFigure vG,

that the perforationsBg, B10 are arranged withrespect to each other in such manner that the thread B5 is run diagonally from one member E7 tothe'other member B8. l The perforated guiding members and the associated parts are designed to guide the thread or. cord and to put it under tension. B11 is a longitudinal Amember suitably supported in brackets or other parts, and carrying a plurality of thread engaging and tensioning devices. `These devices include relatively flat parts VB12 and relatively bent or inclined members B13, one being situated adjacent hcachot part B16 is notched as at B17 to receive the thread,l

and has positioned upon it a bifurcated bracket member B18 which is provided at its upper end with a laterally bent perforated., portion B19. Fastened to the member B12l is an ,upwardly ex'- tending bracket member B20 in which is pivoted a lever arm B21, which is shaped as indicatedin Figure 5 and provided with a ydowriwardly facing portion in which is formed a perforation B22. At its lower end the portion B21 has preferably a contact point B22. The thread B5 passes through the perforation B22, thence over an up-l wardly extending elongated ymember lB24 and about a roller B25, which is held inposition 'in upwardly extending and downwardly `facing stirrups or brackets B25. B2'1 is .a guiding: member provided with perforations B20,.through which the threads pass on their way to theiweaving or knitting mechanism. B29 is a contact bar, run` ning susbtantially throughout the length of the machine and 'of such lentgh and so situated that each of the members B21 may contact it when such members have .moved into the dotted line position shown in Figure 5. B30 is an insulation for the contact bar B29. J

I shall now describe the mechanism for supplying and moving another set of threads, namely, the shuttles, and while' these are indicated generally in Figures. 1 and 2, they are shown in more detail in Figuresii', 7 and 8. InlFigure'4 is shown in plana portion ofthe shuttle operating mechanism. C, C are bed portions upon which the shuttles move. At each side of the-machine is mounted a bar yC1 which is'cut along its inner face to provide openingsor cut away portions C2, separated by fingers C5. C4 is a rock ing lever,pivoted as at C5 upon any suitable support. C5 is a link connecting one end of the leverl to the bar C1. There will ordinarily be several of such lever and linkassemblies connected to the bar C1 to move it. A driving link C7 is connected to the lever C4 and is mountedA to be reciprocated back and forth and thus to rock the lever C4 and move the bar- C1 back and forthl across the machine. Mounted upon thebar C1 is a hook bar C8 upon which are mounted a plurality of laterally bent hooks C9. These hooks might be formed integrally with the bar or formed separately and attached to it. The bar C2 is so mounted upon the bar C1 that moves forward and back across the machine with it.'- At its end the bar C8 carries a guide C10 which may or may not-have an anti-friction roller 'mounted' upon it and which projects within a slot/C11 in a fixed guiding member C12. 'A portion ofthe slot C11, as at C13, is displacedsideways 'and thus, as the bar C1 moves forward toward the center of the machine, carrying with it the bar C2, when the roller C10 moves into the portion C13 of theslot C11, the bar C8 with the hooks upon it is vmoved laterally along the' machine.V Projecting upwardly and forwardly from thebar C1 is a series of bracket members C14.

These brackets are' joined by a longitudinal member C15 which runs along the machine and which carries onits facey yform no particular part of the present invention,

they will not be further described.

D is a longitudinal frame member running generally along the machine and situated above the shuttles and shuttle moving mechanisms. At its forward edge, as viewed in Figure 2, and on its left side, as viewed in Figure 8, it is provided with'notches D1 and with a series of outwardly projecting pointed members D2. As will be seen fromFigure 2, the pointed members are spaced between the notches D1. A bar D3 is positioned adjacentthe notches D1 on the under side of the member D and is provided with similarly placed notches'D4. Carried in suitable bearings, preferably.' from the member D and running approximately from end'to end of the machine, at least throughout the width occupied by the shuttles, is a rod D5, formed of electro-conductive material and carrying an insulated contact strip or bar D0. The rod D5 is supported in insulated bearings D", one of which is shown in Figure 4, and is provided with electrical connections such as that shown in Fig. 4 at D8. At some point along the bar D5 and preferably adjacent one end, is a split lever D0. One portion of the lever is downwardly curved or turned, as at D10, and the other portion D11 is laterally bent away from the portion D10 as shown in Figure 8. Positioned upon the member C1 is an upwardly extending'bracket D12 whichmay be double or bifurcated and which carries an insulating contact member D15 which is positioned to be contacted by the member D10 or the member` D11. When the bar C1 is in the right hand position, as indicated in Figure 8, the portion D10 of the lever D9 is in contact with the insulated contact portion D15. When the bar C1 .is moved 'to' the dotted line position as shown in Figure 8, the contact member D15 moves out of contact with the lever part D10 and into contact with the lever part D11 and thus moves the 5 lever to the dotted line position shown in that figure, andthe rod D5 is thus rotated.

Eis a thread or cord contacting lever. One of these levers is used for each of the series of threads which are fed from the shuttles. The levers are' formed preferably with laterally and downwardly bent portions E1 at one end and with a downwardly bent, rounded portion E2 at the other end and with a contact point E3 formed in the downwardly bent portion. A yoke-like member E4 is positioned in the lever and serves as a bearing. `A pin E5 is removably positioned in the yoke E4 to hold the lever in position. The lever is shown mounted particularly in Figure 8. While the levers rmay be pivotally supported from the member D in any suitable manner, they are shown assupported on a bearing rod E6 which is carried from the member D in suitable supporting parts E7.

F are shuttles, each `of which is provided with a relatively flat bottom portion having raised forward ends F1 and inclined sides F2 which may be contacted by the contact parts C15 when pushed in one direction and engaged by the hooks C0 when moved in the reverse direction.

.' a second roller H1, over it, and

A spool F3 is mounted*for..rotation.;.within:fthe shuttle. Upon the spool is carried a` thread' VF4 which passes off asindicatedfparticularly in Eig-:- ure 8, preferably over the top vof'thesspool vi313' aboutv a tensioning member orrodF isf looped about a second tensioning member F6. and passes outwardly through a perforation F7 in thejupper end or. top` of the shuttle trame member. lThere is ar lever E for each ofthe threads orlcords.

I shall nowdescribe the knittingpor weaving mechanism. As above mentioned; thenet machine which is lshown in the drawings forms nets of two series of twine andthe net ,is .indicated as G. It passes over a roller.H,.between it and between;v itsand a third roller H2. it is vdiscl'iarged from that roller and .passes over a final roller Hf1 and .isdischarged from the machine. The rollers are all driven in phase with each other, the shaft of the roller-H1 carrying a sprocket H5, the shaft ofthe rollers H1 carrying a sprocket H6, the two sprockets being connected by a chain H1. The shafts lof each of the rollers H, H1 and H2 .carry respectively, gears H8, Hg and H111, which mesh with each other as indicatedl particularly in Figurek 2. The driv-` ing mechanism and thepower mechanism gen,v erally for operating the .net making machine Aare not shown. They form no particular part of the present invention. I It is suiiicient y that some means is provided for driving the necessary parts of the machine. Certain of the knitting or weaving operations are controlled by rotary cams. These cams are driven in phase withA the` ma-` chine. One of them1, is indicated `in Figure 3. It is mounted on a shaft Il, carried at anysuitable place in the assembly, and it .isv driven .at such speed that it makes one com vlete revolution for each reciprocation of the shuttles. rIt thus makes' half of a revolution for eachmovement of the yshuttle from one side ofthe machine to-the other. As shown in Figure 3, thefcam l" carries a Contact I2. `,The contact, member I2 is in contact with two spring cn'lntactsjl3 which are connected by electrical conductors, to thershuttle contactbarD. Since the vsliuttle contact bar D5 is connected to the lower twinecontact barv B29, the contact of the member 12with the mem bers I3 effects a connection to both of thelcone, tact bars. Positioned at the-,otherjside of cam I, that is `,to say,.180"y separated fromthe contacts I3, is a pair of contactsl. l The wiring of the machine, including the wiring of the power circuitby means of which the machine is operated, and the wiring o-f the `sec-l ondary or control circuit, by means of whichits operation is controlled, are shown in Figure 11. The main power supply is furnished by conductors J, J1. A magnetic clutch is indicated as at J2. When this clutch is energized and when the the machine will operate. v l'f the disconnect thev Ina-l chine and even though the motor may continue to operate, the machine will `not ,beoperative Ordinarily in machines of this class, the friction, involved is lsuch ydisconnected or the power is turned o1i,the machine will stop practically instantly. For the ,sake of convenience, the wire J 1` is indicatedfas positive and the wire J as negative; J3 is a switch by f means of which wires J', J1` maybeconnected `to leads J4, J5, respectively. The wireJ1v is .connected to a switchV J 6 from -which awire J 1- leads to the negative p'ole of the magnetic clutch. From the positive pole of the clutch a wire AJ8 leads to the switch J 6 to which switch thewire lJis .cone

grounds'. L21 andMi2l may nected.` Accoil J' isr inserted'. between the wires Ji'. and J2 to preventsparking from the magnetic clutch.- v.110. is afswitclrr generally similar to the switchyJS..RJ11y is a :switch operating-,arm connected toboth of the-switches and. adapted. to be moved tooperatethem. The arm J11 may be moved by la'. solenoidV J12'.. vA connection J13 runs from the connection J4 to the solenoid. The other lend ofthex lenoid-is connectedby a connection J14 to the switch J1 and also by a connection ;J1-.v thesamefend. of thesclenoid is connected` .tot a switch 516; :A connection J17 runs from the. connection. J5' toone of theY contacts I4. The 'otlfier contact I4 isA connected by a connection J-ltd the switch'.l Jf16'." J19'is1a resistance inserted'in-.thecircuit of the solenoid J 12 to prevent sparking; QJ2 is/a wireiea'ding .from switch J 3 to switch J1JQ.,- Vlrarve:spoken `of theswitches J3, J6, J i0. and. J1@ in:y the' singular. From the drawings it is'lclear thatweachof` theswitches is a double SWChsecondary-source of current'isxfurnished by means of wiresgK, ifi-1,' which are indicated in Figure 11 as beingrespectively, the minus and plus connections offa i8` volt. current source. The wireK is` connected to the switch J'10' and the wire K1, through one .or more resistances K2, is con nectedy tothe :switch-.516., .From the switch J1 a` wirel K3 -whichQis also 4connectezl to the wire K1, runs to. one ofthe contact members I3. From the opposite, contact;memberJI.3 awir'e KA1 runs to the shuttle Contact bar-D5. A wire=K5 which is connected tothe wirefK1 rnns'to the lower twine con tact bar 1329s.v :Connected torthe, wire K is a wire K6 which .atits opposite' endis connected to one endof a solenoid' K1... 'The other end of the solenoidhastconnected toiit'a wirexK whichis grounded'as atlK9 andiis alsof connected vto the switch J 16; A: resistance K10 is; insertedlin the circuit of the solenoid K" topreyentisparking.

The shuttle contactsfLiare connected to a single connectionmemberLl whichis grounded as at L2. Thelower twinecontactsM are connected preferably to' .a :singlecontact member M1 whichk is grounded as iat..'M2`. These -two.cm'itact members are-groundedon the machine as is also the Aground co-rmection-Ki-'of` the wire K8. Thus each of the be in' circuit with the groundKgV f f It willfbe realized that 'whereas I have herewith shown and-.described a practical? operative device, nevertheless*manyl changes 'might lbe made in the size, shape-number and Ailispositi'on `yof parts withoutde'partin'g from the spirit of my inventioniand I wish; therefore, that my showing betaken as ina sense'diagranunatic-. In particular the automaticcstop arrangement whichis embodied in this application'm'ght be applied to any ysort of knitting orfweaving machine in which any sort of fabric ismade from threads, cords, yarn, twine orthe like. Where in the specification and claims the words""twine?, "-cord, threads or similar words are used, theyai'e used to mean any such member, whether it be weak or strong,` formed of single--strands of terial orof vmany strands of materiali.

4The use -and follows: f A

For ordinary purposes, when the invention is applied to the/type operation 'of' my invention are as of machine illustrated herewith, the machine willfoperate continuously until a.breakageoccms` If any thread, cord or twine breaks, the machine will be automatically stopped but 'it will stop? automatically, however, at theirrst convenient Y .repair .pointl in its #cycle after the break occurs. Thus in a device where shuttles are used, the machine is arrangedl to stop, not immediately upon the occurrence of a breakage, but as soon thereafter asthe shuttle has reached a convenient position for repair. Since this automatic stopping in the form ofthe invention illustrated herewith is electrically operated, the operation of this feature will be described in connection with the wiring diagram Yshown'in Figure l1.

As shown in Figure 11, the main current supply is broken, the magnetic clutch is not energized and the machine is not in operation. To commence operation, the switch J3 is closed, which puts current through thefwire J to the switch J through the wire J8 to' the magnetic clutch, through the clutch, through the Wire J", the switch J6, the wire J4. When the clutch is thus energized it engages and if the driving mechanism is set in operation, the machine will be operated. So long as no breakage of twine or thread occurs, the parts will undergo no change. If a breakage occurs in either of the sets of twine, that is either in one rof the lower twines or one of the shuttle twines, a shuttle contact or a lower twine contact will fall eitherupon the contact bar D5 or the bar B29. The next time the contact I2 makes contact withthe membersI3 after the occurrence of such a break, current will pass from the auxiliary 48 volt circuit, through the wire K1, through the resistance K2, the wire K3,.the contact I3, the contact I2, the second contact I3, the contact bar D5, one of the Yshuttle contacts L, through the connection L1 to the ground L2, which represents the machine, thence throughthe machine to the ground K9, which is also the machine, and from it to thev wire K8, which is grounded on the machine, to the solenoid K7, through the wire KS, back to the wire, K, thus completing the circuit, energizing the solenoid K7 and closing the switch JIS. As soon as the switch KI6 is closed,

the path of the current which energizes the solec noid K7 is through the wire KI, through KI, to switch KIG, wire K8, solenoid K7, wire K6, wire K, back to the current source. Theparts will remain in this position until the contact I2 has completed 180 of movement and makes contact with the contacts I4. Then current passes :from `wire JI, through the switch J3, wire J5, JI'I, contacts I", wire JIB, switch JIS, wire JI5, to the solenoid JI, from the solenoid Jl2 to wire JI3, vto wire J4, back through the switch J3 to wire J. 'I'hus the solenoid JI2 is energized and it moves to open the switch J6 and close switch JI0. The opening of the switch JG breaks the connection to the magnetic clutch, thus stopping the machine. The position of the contacts I4 is such that the machine will lbe brought to a stop only with the shuttles at the front of the machine, that is, at the opposite side from the position shown in Figures l and 8.

With the machine stopped as a result of the automatic action above described, current is passing from wire JI, through switch J3,.through wire J20, to switch JI?, wire JI?, to solenoidk JI, thence through wire J I3, J4, switch J3 to wire J. Thus the solenoid is held in position to hold switch J6 open and to hold switch JI0 closed. When the switch J I0 is closed, current is supplied from wire KI, through resistance K2, wire K3, to switch JIU, back along wire K to the line, thus short circuiting solenoid K7 and permitting the opening of the switch JIS. v

To start the machine now it is necessary, after the breakage has been repaired, to open switch J3,

thus de-energizing the solenoid JIz and permit'- ting the opening of the switch J 1 and the closing of the switch J6. Then, upon a subsequent closing of the switch J3, the parts are in position so that the magnetic clutch is energized and the machine may be put in operation.

I claim:

1. In combination in a machine for making fabric from strands, automatic means for stopping the machine at a predetermined point in its normal cycle after the breakage of a strand, in response to said breakage, and irrespective of the time of breakage said means including members movably mounted, one for each strand, and adapted in normal operation of the machine to be held in substantially immovableposition by said strands, and free to move into operative position upon the breaking of a strand and thereby to initiate the action of the stopping mechanism, and means for holding some of said movably mounted members in inoperative position, irrespective of the condition of the strands, during a portion of the cycle of operation of the machine.

2. In combination in a machine for making fabric from strands, automatic means for stopping the machine at a predetermined point in its normal cycle after the breakage of a strand, in response to said breakage, and irrespective of the time of breakage said means including members movably mounted, and adapted in normal operation of the machine to be held in substantially immovable position by said strands, and means for holding some of said movably mounted members in inoperative position, irrespective of the condition of the strands, during a portion of the cycle of operation of the machine. 3. In combination in a machine for forming fabric from thread, means for supplying thread and for forming it into a fabric, and automatic means for stopping the operation of the machine upon the breaking of a thread, which includes a movably mounted member, said member held against movement by the thread and mounted to move upon breaking of the thread, and electric conductor means, mounted to be contacted by said movable member when the latter is free to move, the conductor and movable member being in electric circuit and means for rendering said circuit incomplete for an appreciable time interval after breakage said stopping means including a circuit making member mounted for rotation.

4. In combination in a machine for forming fabric from threads, means for supplying a plurality of threads and for forming them into a fabric, and automatic means for stopping the operation of the machine upon the breaking of a thread, which includes a plurality of movably mounted members, one for each thread, said members held against movement by the threads, said members mounted to move upon breaking of the thread, and electric conductor means mounted to be contacted by said movable members when the latter are free to move, the conductor and movable members being in electric circuit, a conductor and a movable member adapted, when the movable member is free to move, to contact each other to complete an electrical circuit and to initiate the operation of a stopping mechanism to stop the machine and means for rendering said circuit incomplete for an appreciable time interval after breakage said stopping means including a circuit making member mounted for rotation.

5. In combination in a machine for forming fabric from threads, means for supplying a pluralivty of threads and for forming them into a fabric, and automatic means forr stopping the operation of the machine upon the breaking ofa thread, Which includes a plurality ofmovably mounted members, one for each thread,l said members held against movement by the threads and mounted to move upon breaking of the thread, and electric conductor means mounted to be contacted by said movable members when the latter are free tovmove, the conductor and movable membersbeing in electric circuit, a conductor and a movablemember adapted, when the movable member is free to move, to-contact each other to complete an'electrical circuit and to initiate the operation of a stopping mechanism to stop the machine, the stopping mechanism including means to prevent the stopping of the machine until the latter has moved to a predetermined positionafter'the occurrence of the break and including a contact member mounted for rotation. Y

6. 'In combination in aimachine for making fabric from strands, said machine including parts mounted for rotation, automatic means for stopping the machine at a predetermined point after the breakage of a strand, in response to said breakage, said means including members movably mounted and adapted, in normal operation of the machine, to be held in substantially immovable position by said strands, and free to move into operative position upon the breaking of a strand and thereby to initiate the action of the stopping mechanism,r said means including a rotating contact membensaid stopping means including a contact member mounted on one of said rotatably mounted parts.

'7. I n combination in a machine for making fabric from strands, said machine including parts mounted for rotation, automatic means for stopping the machine at a predetermined point after the breakage of a strand, in vresponse to said breakage, said means including members movably mounted, one for each strand, and adapted in normal operation of themachine to be held in substantially immovable position by said strands, and free to move into operative position upon the breaking of a strand and thereby to initiate the action of the stopping mechanism, said stopping means including a contact member mounted on one of said rotatably mounted parts.

8. In combination in a machine for making fabric from strands, said machine including parts mounted for rotation, automatic means for stopping the machine at a predetermined point after the breakage of a strand, in response to said breakage, said means including members movably mounted, one for each strand, and adapted, in normal operation of the machine, to be held in substantially immovable position by said strands, and free to move into operative position upon the breaking of a strand and thereby to initiate the action of the stopping mechanism, said stopping means including a contact member mounted on one of said rotatably mounted parts, and means for holding some of said movably mounted members in inoperative position, irrespective of the condition of the strands, during a portion of the cycle of operation of the machine.

9. In combination in a machine for making fabric from strands, said machine including parts mounted for rotation, automatic means for stopping the machine at a predetermined point after the breakage of a strand, in response to said breakage, said means including members movably mounted and adapted, in normal operation ofthe' I machine, to be heldin substantially. immovable `position'ibyy said-strands, said means including ra contactv member mounted on one of said rotatably mounted parts. r-

10. I n combination in amachine for Lmaking fabric from strands, saidmachine including parts mounted for rotation?, automatic .means for stopping the machine, after the breakage of .a strand, said fmeans including electriccircuit forming members, means for energizingrthe circuit, circuit completing members: nomally'held out of circuit by a strand and adapted to be freed for movement into circuit upon breakage of a strand, and 'a circuit interrupter, effective to prevent completion .of thecircuit after breakage of a strand until the machine'has reached a suitable point infitscycle, ysaid. stopping means including a'contact member mountedon one of said rotatably mounted parts. v

11..In combination in'amachine for making fabric from strands, said machine including parts mounted for'rotaiion, automatic means for stopping the machine, after thebreakage of a strand, said means. including'.electricvcircuit --Lforming members,meansfforfenergizing the circuit, circuit `completing members normally held out of circuit fby. afstrand andladapted to be freed for movement intclcircuitupon breakage of a strand, and a circuit interrupter, said stopping means including a contact member mounted on one of said rotatably mounted parts.

12. In combination in a'machine for making fabric from strands, automatic means for stopping the machine after a relatively limited movement at a predetermined point in its cycle after the breakage of a strand, in response to said breakage, said means including members movably mounted and adapted in normal operation of the machine to be held in substantially immovable position by said strands, said means including a rotating contact member mounted upon a normally rotating part of the machine.

13. In combination in a machine for making fabric from strands, automatic means for stopping the machine after a relatively limited movement at a predetermined point in its cycle after the breakage of a strand, in response to said breakage, said means including members movably mounted and adapted in normal operation of the machine to be held in substantially immovable position by said strands, and free to move into operative position upon the breaking of a strand and thereby to initiate the action of the stopping mechanism, said means including a rotating contact member mounted upon a normally rotating part of the machine.

14. The combination with a fabric making machine, a stop motion mechanism therefor comprising a first electric circuit having the continuity thereof normally broken at at least two points, means responsive to breakage of a thread for closing one of said breaks, means operable in response to operation of the machine for periodically closing another of said breaks, a second electric circuit having the continuity thereof normally broken at a plurality of points, means responsive to the simultaneous closing of the breaks in the first circuit for closing one of the breaks in the second circuit, said periodic closing means also operating to periodically close a break in the second circuit in response to operation of the machine and means responsive to the simultaneous closing of the breaks in the second circuit for stopping the machine.

15. A stop motion mechanism for fabric making machines comprising a'plurality of electric circuits, one of said circuits innormal operation of the machine being energized and the others deenergized, said normally` deenergized circuits each including a plurality of normally open breaks, means to yenergize, one of said normally deenergized circuits including a part operable in response to operation of the machine for periodically closing one of said-breaks in said circuit, and means responsive to breakage of a thread on the machine for closing another break in said circuit to complete the continuity thereof, means responsive to the energization of saidvnormally deenergized circuit to energize another of said normally deenergized circuits, said periodic closing means operating also to periodically close a break in said other circuit, to thereby complete its continuity, and means responsive to completion of the continuity of said other circuit for deenergizing the normally energized circuit, Sto stop the machine and to restore the second mentioned normally deenergized circuit to normal deenergized condition.

16. The combination with a fabric making ma'- chine, a stop motion therefor comprising a plurality of normallydeenergized electric circuits, and a normally energized electric circuit, the operation of the machine being dependent'upon continual energization` of said last vmentioned circuit/means for energizing one of said normally deenergized circuits in response to the breakage of a thread in the machine, means for energizing the second normally deenergized circuit in response to cnergization vof said rst named deenergized circuit, and means responsive to energization of said second mentioned normally deenergized circuit for vdeenergizing the normally energized circuit to stop the mechanism and to deenergiz'e the second of saidl normally deenergized circuits.

17. The combination With a fabric making machine, a stop motion mechanism therefor, comprising a iirst and a second electric circuit, both of said circuits including a plurality of normally open breaks, means loperable in response to operation of the machine lfor periodically closing a break in each of said circuits, means operable in response to breaking of a thread in the machine for closing a break in one of said circuits, means yoperable irl-response to the simultaneous closing of the breaks in said last mentioned circuit for closing another break in the other circuit, and means responsive to the simultaneous closing of breaks in said` other circuit for stopping the machine. l

. f f LOTHAR A. EDERER. 

